Question

calculate the speed in km /h. distance 210km time 1 hour 40 min
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Answer 1

$\blue{distance = 210 \: km}$

$\green{time = 1hour \: 40minute}$

$time = 100m$

$time = \frac{100}{60} hours$

$speed = \frac{distance}{time}$

$speed = \frac{210}{ \frac{100}{60} }$

$speed = \frac{210 \times 60}{100}$

=> $\frac{126}{1}$

$126kmh { }^{ - }$

Answer 2

Speed = 126 km/h

Step-by-step explanation:

GIVEN

Distance = 210 km

Time = 1 hour 40 minutes

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To Find

Speed

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We know that,

Speed = Distance / Time

We know that,

1 hour = 60 minutes

Therefore,

Time = 1.666666666

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Speed = 210 / 1.666666666

Speed = 126

Speed = 126 km/h